Скачать или смотреть IGCSE Chemistry - Rate of reaction (6.2)

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Cambridge IGCSE Chemistry (0620/0971)
Chapter 6 - Chemical reactions
Topic 6.2 - Rate of reaction
For exams in 2023, 2024 and 2025 (core and extended)

As always this video follows the Cambridge syllabus exactly and contains absolutely everything you need to know for your final exam!

Other lessons in this chapter:
Topic 6.1 - Physical and chemical changes: https://www.patreon.com/posts/igcse-c...
Topic 6.3 - Reversible reactions and equilibrium: https://www.patreon.com/posts/igcse-c...
Topic 6.4 - Redox:    • IGCSE Chemistry - Redox (6.4)  

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Timestamps:
0:00 intro
0:38 Factors that affect rate of reaction
1:53 Investigating rate of reaction
3:14 Interpreting data, including graphs
4:44 Collision theory (extended)
6:42 Factors that affect rate of reaction (extended)
8:27 Evaluating practical methods (extended)

Core content:
1) Describe the effect on the rate of reaction of:
(a) changing the concentration of solutions
(b) changing the pressure of gases
(c) changing the surface area of solids
(d) changing the temperature
(e) adding or removing a catalyst, including enzymes
2) State that a catalyst increases the rate of a reaction and is unchanged at the end of a reaction
3) Describe practical methods for investigating the rate of a reaction including change in mass of a reactant or a product and the formation of a gas
4) Interpret data, including graphs, from rate of reaction experiments

Extended content:
5) Describe collision theory in terms of:
(a) number of particles per unit volume
(b) frequency of collisions between particles
(c) kinetic energy of particles
(d) activation energy, Ea
6) Using collision theory, describe and explain the effect on the rate of reaction of:
(a) changing the concentration of solutions
(b) changing the pressure of gases
(c) changing the surface area of solids
(d) changing the temperature
(e) adding or removing a catalyst, including enzymes
7) State that a catalyst decreases the activation energy, Ea, of a reaction
8) Evaluate practical methods for investigating the rate of a reaction including change in mass of a reactant or a product and the formation of a gas